Skip to main content

WAINUA

Generic: EPLONTERSEN

Verified·Apr 23, 2026
NDC
0310-9400
RxCUI
2671944
Route
SUBCUTANEOUS
ICD-10 indication
E85.1

Affordability Check

How much will you actually pay for WAINUA?

In 30 seconds, see every legitimate way to afford WAINUA — Medicare copay, manufacturer copay card, Patient Assistance Program, grants, or cash.

Check my options →

About WAINUA

What is this medication? WAINUA, which carries the generic name eplontersen, is a prescription medication used to treat adults with the polyneuropathy of hereditary transthyretin-mediated amyloidosis, or hATTR. This condition involves the buildup of abnormal protein deposits in the nerves, which can cause symptoms such as numbness, tingling, and muscle weakness in the hands and feet. By targeting the source of these proteins, the medicine helps to slow the progression of the disease and manage the neurological complications that often interfere with daily activities.

The drug functions as an antisense oligonucleotide that reduces the production of the transthyretin protein by the liver. It is administered through a monthly subcutaneous injection, often using a single-dose autoinjector that allows for convenient dosing at home. Because the medication lowers the levels of transthyretin, it can also decrease the amount of vitamin A in the blood, so patients are usually instructed to take daily vitamin A supplements while undergoing treatment. Patients should always consult with their healthcare provider to monitor their progress and manage any potential side effects.

Copay & patient assistance

  • Patient Copay Amount: As little as $0 per month
  • Maximum Annual Benefit Limit: Not Publicly Available
  • Core Eligibility Restrictions: Must have commercial insurance, a valid prescription for WAINUA, and insurance plan approval; must be a resident of the United States or Puerto Rico; and must be enrolled in the WAINUA Savings Program.
  • RxBIN, PCN, and Group numbers: Not Publicly Available

External links go directly to the manufacturer's portal. RxCopays does not receive compensation for referrals.

Compare pricing elsewhere

RxCopays doesn't sell drugs or take referral fees. Here are the transparent-pricing directories we recommend checking alongside your insurance formulary.

We deep-link because transparency helps patients. None of these partners pay RxCopays.

Conditions we've indexed resources for

Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.

Medicare Part D coverage

How WAINUA appears across Medicare Part D plan formularies nationally. Source: CMS monthly Prescription Drug Plan file (2026-04-30).

Covered by plans

1%

48 of 5,509 plans

Most common tier

Tier 5

On 67% of covering formularies

Prior authorization required

100%

of covering formularies

TierFormularies on this tierShare
Tier 1 (preferred generic)3
25%
Tier 2 (generic)1
8%
Tier 5 (specialty)8
67%

Step therapy: 0% of formularies

Quantity limits: 75% of formularies

Coverage breadth: 12 of 65 formularies

How to read this:plans on the same formulary share tier + PA rules. Your specific plan's copay depends on (a) the tier above, (b) your plan's cost-share for that tier, (c) whether you're in the initial coverage phase or past the 2026 $2,000 out-of-pocket cap. For your exact plan, check its Summary of Benefits or log in to your Medicare.gov account. Copay cards don't apply to Medicare (federal law).

Prior authorization & coverage

PayerPAStep therapyCopay tier

Medicare Part D

Yes

Related drugs

How this page is sourced

  • Drug identity verified against openFDA NDC Directory.
  • Label text (when shown) originates from NLM DailyMed.
  • Copay and assistance URLs verified periodically; if you hit a broken link, tell us.

Rare-disease navigation (specialists, trials, patient communities)

WAINUA treats a rare condition. For in-depth disease pages on our sister site:

UniteRare.org is our sister site for rare-disease navigation — same editorial team, same accuracy standards.